immutable
immutable
A negative assertion of mutability.
mutability
An indication of whether a release file field value can change between two released versions of the same component or reference set member.
Notes
All released versions of the same component or reference set member have the same id (field), but each version has a different effective time (field).
If a field is mutable (Mutable=YES), its value can differ from one version to the next without changing the identifier.
If a field is immutable (Mutable=NO), its value must be the same in every version of a component. To change the value associated with an immutable field, the existing component must be inactivated and a new component must be created to replace it. The new component must have a previously unused identifier. The field values are set to replace the inactivated concept with the updated information.
The mutability for each field, in each type of release file, is indicated in the release file specification table for that component type or reference set.
Alternatives
Mutable
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